And james b



(No Model.)

P. L. KIMBALL & J. B. WILLIAMS.

Milk Cooler.

Patented July 13, 1880.

Jivenfor J N-FHHTS, PHOTD-LITHOGRAPMER, WASHINGTON D C UNITED STATES PATENT OFFICE.

PERLEY L. KIMBALL, OF BELLOWS FALLS, VERMONT, AND JAMES B. VVIL- LIAMS, OF GLASTONBURY, CONNECTICUT, ASSIGNORS TO VERMONT FARM MACHINE COMPANY, OF BELLOWS- FALLS, VERMONT.

MILK-COOLER.

SPECIFICATION forming part of Letters Patent No. 229,830, dated July 13, 1880. Application filed April 17, 1880. (No model.)

To all whom it may concern:

Be it known that we, PERLEY L. KIMBALL, of Bellows Falls, county of Windham, Vermont, and JAMES B. WILLIAMS, residing at Glastonbury, in the county of Hartford and State ofOonnecticut, both citizens of the United States, have invented certain new and useful Improvements in Milk-Coolers; and we do hereby declare the following to bea full, clear,

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to an improvement in that class of milk-cans employed in dairies for holding milk until the cream rises or the milk is otherwise disposed of. These cans,

being intended for submersion ina tank of water for the purpose of regulating the temperature of their contents, are generally provided with a water-tight cover. Experience, however, having demonstrated the fact that 2 5 it was necessary to give a free escape to the gas and'vapors rising from the milk, various devices were employed to accomplish this result, among the most successful of which is what is commonly termed the water-sealing 0 cover. This cover is made of greater diameter than the top of the can and provided with a deep rim, which, when the cover is in place, extends down the side of the can for some dis tance, leaving an open space between them, 3 5 into which the water-enters, but is prevented from rising high enough to pass over the top into the can by the compression of the air in the top of the can, and thus allows'the gas to escape freely through the water, while pre- 0 venting the entrance of air from the outside;

and this invention consists in certain improvements in the construction of covers for this class of cans and in the means of securing the cover in position, as will be hereinafter fully described.

In the drawings, Figure 1 is a side view of *the upper part of a can with the cover in section. Fig. 2 is a plan showing the cover and devices for holding it to the can. Fig. 3 shows a modification of the cover grooved or corru- 5o gated for the purpose of increasing its strength and, under certain circumstances, facilitating the manufacture.

A represents the can, constructed in any of the well-known forms in use, and provided at two or more points of its circumference with ears B, which project outward to a considerable distance from the sides of the can, and may form handles, by which the can is readily moved from place to place. Each of these ears B is provided with a flat upper bearing-surface and a lip, a, projecting inward.

The cover C is preferably formed from a single piece of metal, and may be struck up from a sheet, the top of the cover being (lomeshaped and the rim or side b being slightly flared outward, which facilitates this method of construction. The lower edge of the rim b is turned outward horizontally, forming the flange d, which completely encircles the rim. This flange may be stiffened by rolling its edge over, forming a thickened periphery, or it may be turned over a wire, both means producing the same result, so far as to stiffen the flange.

A cam-shaped wedge, e, is secured to the flange on one side, projecting beyond its periphery in such a manner that when the cover is placed upon the can with its flange resting upon the bearing-surfaces of the ears B and 8c then turned to the right the wedge 6 will engage with the lip aupon one of the ears, forcin g the edge of the flange under the lip upon the opposite ear and securely holding the cover in place over the top of the can without touching it at any point, as is clearly shown in Fig.

1 of the drawings. Thus a free passage is atforded all. around for the escape of gases emanating from the milk. The same result is also accomplished by using the corrugated cover shown in Fig. 3, which may be secured in position in any suitable manner, so as to leave openings between it and the can to permit the free escape of gases from the milk to the surrounding Water, by which they will be ab- 5 sorbed.

for said cover, substantially as shown and described.

I n testimony whereof we aifix our signatures in presence of two witnesses.

PERLEY L. KIMBALL. JAMES B. WILLIAMS.

Witnesses to P. L. Kimballs signature:

N. G. WILLIAMS, G. W. SWIFT.

Witnesses to J. B. Williamss signature:

WILLIAM S. GOSLEE, A. W. CRANE. 

